Corrugating apparatus.



0. B. LINDQUIST. CORRUGATING APPARATUS.

APPLICATION nun MAY 27. 1914.

Patented Jan. 9,1917.

WITNESSES ma 0.. wAsnmcmrv, n. c.

0. B. L|NDQU|ST. CORRUGATING APPARATUS.

APPLICATION FILED MAY 21. 1914.

Patented Jan. 9, 191?.

INVENTOR. (W 7 ATTORNEY.

W IgSES: v [@flW canton.

- 01 1 0 B. miinoii'is'r, or mamma-ssaaswtaal ;asses-ts 'i'o emits n.eamen,

or PITTSBURGH, PENfi SYLVANIA.

oonRUGATIne Al na-ares.

Specification of Letters Patent.

Application filed May 27, 1914. Serial no. 841,258.

My invention relates to; apparatus for manufacturing steel or othermetal plates into corrugated plates each having a corrugated portionsurrounded by a plain, smooth, or uncorrugatedborder.

It is the object ofmy invention to provide a suitable set of rolls andmechanism cooperative therewith for forming such corrugated plates as Ihave described above. I may form such plates from plates having therequired length for a single finished plate, or I may form a series ofsets of corrugations in a long plate and cut. the latter into sectionsbetween the sets of corrugations.

It is also the object of my invention to provide on each side of therolls suitable mechanism for preventing the plates from buckling andcurving.

Other objects will appear hereinafter.

Referring to the accompanying drawings, Figure '1 is a longitudinalvertical section of an apparatus vinvolving my invention; Fig. 2, a lanof Fig. 1; Fig. 3, a plan of a portion 0 a sheet after its treatment bymy invention; Fig. 4, a plan of a single corrugated plate which may beformed by my invention or may be a section formed by cutting the plateshown on Fig. 3 on the dotted lines thereon; and Fig. 5, a section ofFig. 3 on the line VV. a

On the drawings, 1 and 2 represent a pair of horizontal rolls, onevertical over the other. These rolls are mounted in the housings 3, theupper roll being adjustable by means of the screws 4 in a. manner wellknown. The rolls are caused to rotate at the same speed by means of theusual spur gearing connected to the necks of the rolls, one of the gearwheels 5 being shown on Fig. 2. The upper roll 1 is cylindrical andprovided with a number of parallel grooves 6 in its periphery, thesegrooves being interrupted from the point 7 to the point 8 by leaving theroll between these points in its normal condition, that is the surfaceof the roll 1 between the points 7 and 8 is a part of the cylinder inwhich the said grooves have been formed. The lower roll2 isalsocylindrical but has thereon a series of ribs 9 corresponding inposition, cross-section and length to the same characteristics ofthe'grooves 6 with whichthe saidribs cooperate to form corrugations-insheets of metal fed between the rolls. The'surface of the roll 2 isleftnormal between the points 10 and 11, which correspondin position tothepoints 7 and 8 on the roll 1. The roll 1 has itsnormal surface preservedbetween the points 7 and 8, andthe roll 2 has itsnormal surfacepreserved between the correspondingpoints 10 and 11, so thatportions ofthe plates fed between the rolls will not be corrugated.

On the feeding-in or entrance side of the atented Jan. 9.1917- rollsfland 2 I'mount the two horizontal;

rollers 12 and 13 having their pass-in line with the pass between therolls 1 and 2. I make one of these rollers yielding'in order toaccommodateplates of different thicknesses. Inasmuch as I have shown thegrooves on the upper roll 1 and the ribs'on the lower roll 2, Ijhavemade the upper roller 12 non-adjustable in order to prevent the platefrom bending or' warping upwardly by the pressure of the ribs 9; againstthe same. The lower roller 13 is shown yieldingly pressed upward by thecoilspring 14, its tensionbeing regulated by the screw 15. Between therolls and the rollers -I have placed the triangular guide-blocks '16,the lower one of which may be adjusted in any convenient manner.

On the discharge side of the rolls 1 and 2 I have shown the guide-blocks18 having between them a guidepassage in line with the passes betweenthe rolls 1 and 2 and the rollers 12 and 13.

On the discharge side of the rolls 1 and 2 and beyond the guide-blocks18 I arrange a number of pair of vertical rollers 19 and 20, the upperroller 20 of each pairbeing adjustable by means of the screws 21.Inasmuch as the ribs on the plates corrugated by the rolls 1 and 2 havethe corrugations formed in the upper surfacethereof, I have made therollers 19 plain cylinders'and the upper rollers 20 with corrugationscorresponding to the corrugations in the plates. Preferably the rollers19 and 20 will be driven by suitable gearing 22.

23 represents a metal plate which has been plate is fed between therolls I and 2 ribs 24 will be pressed above the upper surface of theplate 23 for a distance corresponding to the length of the grooves 6 andthe ribs 9. At every revolution of the rolls series of parallel ribs 24will be formed on the upper surface of the plate 23 and each set ofcorrugations 24 will be separated from each preceding or succeeding setof ribs by a plain or fiat portion 25. The ribs and grooves have theirends tapered as shown on the drawings in order to draw the metal moregradually from the surface ofthe plate 23 and to give the corrugations abetter appearance. A plate with a single set of corrugations 24 such asis shown in Fig. 4 may be formed with plain or flat portions 25 at eachend. In case a long sheet in which several sets of corrugations 24 areto be made is passed through the corrugating machine, the plain or fiatportion 25 between the sets of corrugations will be severed, forexample, on the lines 26 to form separate corrugated plates such as areshown on Fig. 4. The surface of the rolls beyond the ribs and groovesare left normal or cylindrical so that the plate 23 will have its sidesbeyond the corrugations 24 flat or in its normal condition. By means ofthe normal'ends of the rolls and the normal surfaces between thepoints-7 and 8, and 10 and 11, the plates corrugated by the rolls willhave a border or margin in the normal plane of the plate 23.

I have shown the rolls 1 and 2 hollow, but I do not desire to be limitedto this feature. By making the rolls hollow they may be artificiallycooled by causing air or water to flow through them, it being understoodthat the plates to be corrugated are brought to a Copies of this patentmay be obtained for good heat such as will permit the corrugations to bedrawn out of the plane of the plate without damage to the plate. Thenecks o-r trunnions 'of the rolls may have axial openings 27 (only onebeing shown) through which air or water may be introduced into the sameand led therefrom. Both rolls may be constructed exactly alike eX- ceptthat one has the ribs and the other the grooves; but I prefer to makethe roll 2 with hand holes 28 in its ends so that the nuts 29 may beturned on the bolts 30 which extend through the ribs and the wall of theroll. The heads of the bolts 30 are shaped to conform to the shape ofthe ribs and form a part of the working surface thereof. Besidesaffording means for cooling the rolls or ribs and for giving access tothe fasteningdevices for the ribs, the hollows in the rolls materiallyreduce their weight.

I claim The combination of a roll having ribs thereon, a second rollhaving grooves cooperating with the said ribs to form ribs on a metalplate fed between the rolls, the latter having opposed surfacesinterrupting the continuity of the said ribs and grooves on the rolls,and pairs of rollers between which the plate is fed from the rolls, therollers which lie on the same side of the plate as the grooved rollhaving corrugations fitting the corrugations of the plate.

Signed at Brackenridge, Pa., this 23rd day of May, A. D. 1914.

o'r'ro B. LINDQUIST.

five cents each, by addressing the Commissioner of Patents. Washington,D. G.

